STAC Client pagination support

[pomadchin]

Improvement

At this point StacClient doesn't really support Franklin pagination (only manually via passing an appropriately filled SearchFilters object).
It means that if there would be more that 10-15 items it would be problematic to query all the items.

This task is to improve the interface and to use fs2.Streams an under the hood that seamless handles pagination.

UPD: Pagination is not tested and probably its usage should be omitted for now: #140 (comment)